Drainhole drilling

Details Drainhole drilling Drainhole drilling

1984-03-19

1985-05-28

Leppink, James A.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

166 50, E21B 706

Patent

active

045194637

ABSTRACT:
A method for drilling a well in the earth for the production of minerals therefrom wherein a primary wellbore is first drilled into the earth, the primary wellbore being a deviated wellbore having a radius of curvature in the range of from about 2.5 to about 6 degrees per 100 feet of primary wellbore length, and then drilling from said primary wellbore at least one drainhole wellbore, said drainhole wellbore having a radius of curvature in the range of from about 0.2 to about 3 degrees per 1 foot of drainhole wellbore length.

REFERENCES:
patent: 2404341 (1946-07-01), Zublin
patent: 4194580 (1980-03-01), Messenger
patent: 4386665 (1983-06-01), Dellinger
"ARCO Drills Horizontal Drainhole for Better Reservoir Placement" by Moore III--Sep. 15, 1980.

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